the threat of terror remains with us. it's al qaeda, it's al qaeda inspired but the sources of terrorism have diversified. the tactics have diversified and the targets are diversified. we have to do a lot more in new and improved ways, more work with state and local law enforcement, more work with our own citizens, if they see something to say something. that's the way we make sure we protect the security of americans. >> of course we're also talking today about bob woodward's new book "obama's wars" hot off the presses not yet released but you've seen in the "new york times" "the washington post" a couple of the things in the book relate to your turf. in the book, president obama calls a nuclear attack a "potential game-changer" quoted in an interview "when i go down the list of things i have to worry about all the time that is at the top because that's one where you can't afford any mistakes." this was said, of course, after a drill in may involving a scenario of crude nukes in indianapolis and los angeles, nuclear mate